کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
614277 881392 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Contact area and maximum equivalent stress in elastic spherical contact with thin hard coating
ترجمه فارسی عنوان
منطقه تماس و حداکثر تنش معکوس در تماس کروی الاستیک با پوشش نازک سخت
کلمات کلیدی
مکانیک تماس پوشش ها، منطقه تماس حداکثر استرس فون میوز
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
چکیده انگلیسی


• A coated spherical contact problem is studied theoretically for hard coatings.
• Universal dimensionless relations between various contact parameters are found.
• The effect of hard coating on reduction of the contact area is explained.
• A new way for finding the limit of elasticity in the coated system was introduced.

A finite element analysis was used in order to investigate the elastic contact of a sphere with a thin hard coating compressed by a rigid flat. A proper normalization of the dimensional contact parameters, such as the contact area, load, interference and maximum equivalent von Mises stresses in the coating and in the substrate was used to obtain a universal model of the elastic contact. This model provides empirical relations between these contact parameters for a wide range of mechanical and geometrical properties, which are different from the classical Hertz solution for a homogeneous sphere compressed by a rigid flat. The model also introduces a new approach for calculating the limit of elasticity in the coated system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Tribology International - Volume 93, Part A, January 2016, Pages 289–296
نویسندگان
, ,